Right atrial enlargement occurs when the right atrium, one of the heart's upper chambers, is larger than normal. The right atrium is the first entry point of blood returning to the heart from ...

Age, gender, and body size can affect the size of the left atrium, but several medical conditions can also be responsible. The left atrium is one of the four chambers of the heart. It’s located in the ...

Researchers have identified that enlargement of the left atrium of the heart is linked to abnormal activity of molecules that are associated with adverse changes in the heart's size, shape, structure, ...